webgl added

src/main.rs

@@ -1,4 +1,104 @@
+/*use std::fmt::write;
+
 use osmpbf::*;
+*/
+
+use yew::prelude::*;
+
+#[function_component]
+fn App() -> Html {
+    let counter = use_state(|| 0);
+    let onclick = {
+        let counter = counter.clone();
+        move |_| {
+            let value = *counter + 1;
+            counter.set(value);
+        }
+    };
+
+    html! {
+        <div>
+            <button {onclick}>{ "+1" }</button>
+            <p>{ *counter }</p>
+        </div>
+    }
+}
+
+fn main() {
+    yew::Render::<App>::new().render();
+}
+
+/*
+const fn compileLinkProgram(vs: *const u8, vs_len: usize, fs: *const u8, fs_len: usize) -> i32 {
+    let test_val: i32 = 1;
+    test_val
+}
+
+const fn bind2DFloat32Data(data: *const f32, data_len: usize) -> i32 {
+    let test_val: i32 = 1;
+    test_val
+}
+
+pub fn glBindVertexArray(vao: i32) {
+    println!("glBindVertexArray");
+}
+
+pub fn glClearColor(r: f32, g: f32, b: f32, a:f32) {
+    println!("Clear Color");
+}
+
+pub fn glClear(mask: i32) {
+    println!("Clear");
+}
+
+pub fn glUseProgram(program: i32) {
+    println!("Using Program");
+}
+
+pub fn glDrawArrays(mode: i32, first: i32, last:i32) {
+    println!("Draw Arrays");
+}
+
+
+const COLOR_BUFFER_BIT: i32 = 16384;
+const TRIANGLE_STRIP: i32 = 5;
+
+
+
+pub fn run() {
+    const VS_SOURCE: &str = "attribute vec4 aVertexPosition; \
+      void main() { \
+        gl_Position = aVertexPosition; \
+      } \
+    ;";
+    const FS_SOURCE: &str = "void main() { \
+        gl_FragColor = vec4(1.0, 1.0, 1.0, 1.0); \
+      } \
+    ";
+    const POSITIONS: [f32; 8] = [0.5, 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, -0.5];
+    const PROGRAM: i32 = compileLinkProgram(VS_SOURCE.as_ptr(), VS_SOURCE.len(), FS_SOURCE.as_ptr(), FS_SOURCE.len());
+    const VAO: i32 = bind2DFloat32Data(POSITIONS.as_ptr(), POSITIONS.len());
+    glBindVertexArray(VAO);
+    // Set clear color to black, fully opaqe
+    glClearColor(0.0, 0.0, 0.0, 1.0);
+    // Clear the color buffer with specified clear color
+    glClear(COLOR_BUFFER_BIT);
+    glUseProgram(PROGRAM);
+    {
+        const offset = 0;
+        cconst fn bind2DFloat32Data(data: *const f32, data_len: usize) -> i32 {
+    let test_val: i32 = 1;
+    test_val
+}
+
+    const POSITIONS: [f32; 8] = [0.5, 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, -0.5];
+    const PROGRAM: i32 = compileLinkProgram(VS_SOURCE.as_ptr(), VS_SOURCE.len(), FS_SOURCE.as_ptr(), FS_SOURCE.len());
+    const VAO: i32 = bind2DFloat32Data(POSITIONS, POSITIONS.len());onst vertexCount = 4;
+        gl.drawArrays(gl.TRIANGLE_STRIP, offset, vertexCount);
+    }
+
+
+}
 
 fn main() {
     let reader = ElementReader::from_path(
@@ -27,3 +127,4 @@ fn main() {
         }
     }
 }
+*/